From: Daniel Allred <d-allred@ti.com>
Date: Fri, 2 Sep 2016 05:40:22 +0000 (-0500)
Subject: ARM: DRA7: Add secure emif setup calls
X-Git-Url: http://git.dujemihanovic.xyz/img/static/gitweb.css?a=commitdiff_plain;h=501f0ef304549edf41bbcec0e6da008d92cbdf0c;p=u-boot.git

ARM: DRA7: Add secure emif setup calls

After EMIF DRAM is configured, but before it is used,
calls are made on secure devices to reserve any configured
memory region needed by the secure world and then to lock the
EMIF firewall configuration. If any other firewall
configuration needs to be applied, it must happen before the
lock call.

Signed-off-by: Daniel Allred <d-allred@ti.com>
---

diff --git a/arch/arm/cpu/armv7/omap-common/emif-common.c b/arch/arm/cpu/armv7/omap-common/emif-common.c
index 2b790105b0..b26984e26c 100644
--- a/arch/arm/cpu/armv7/omap-common/emif-common.c
+++ b/arch/arm/cpu/armv7/omap-common/emif-common.c
@@ -14,6 +14,7 @@
 #include <asm/arch/clock.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/omap_common.h>
+#include <asm/omap_sec_common.h>
 #include <asm/utils.h>
 #include <linux/compiler.h>
 
@@ -1477,6 +1478,20 @@ void sdram_init(void)
 			debug("get_ram_size() successful");
 	}
 
+#if defined(CONFIG_TI_SECURE_DEVICE)
+	/*
+	 * On HS devices, do static EMIF firewall configuration
+	 * but only do it if not already running in SDRAM
+	 */
+	if (!in_sdram)
+		if (0 != secure_emif_reserve())
+			hang();
+
+	/* On HS devices, ensure static EMIF firewall APIs are locked */
+	if (0 != secure_emif_firewall_lock())
+		hang();
+#endif
+
 	if (sdram_type == EMIF_SDRAM_TYPE_DDR3 &&
 	    (!in_sdram && !warm_reset()) && (!is_dra7xx())) {
 		if (emif1_enabled)